[Elecraft] KAT 500 Firmware

[Dave New]

I had a KAT500 fail to xmit back to the PC, but it could receive, so  
only one of the transistors was out.

To determine this, use Putty or other terminal program to send test  
commands to the serial port that shows up when you plug in the USB  
cable.  If you can command the KAT500 to switch antennas, for example,  
but you see no return message when you ask for the firmware version,  
then you will only need to replace the transistor that drives the  
KAT500 to PC line.

73,

-- Dave, N8SBE

Quoting Andy Durbin <a.durbin at msn.com>:

> "I had this happen a while back and it turned out the Q! and Q2  
> (transistors that control the send and receive lines on the com  
> port) were in operatable."
>
> I would expect that fault to result in the utility not seeing any  
> data at all.   In that condition the utility does not report that  
> the connected device is not a KAT500 because it can't connect at all.
>
> Please confirm that you saw the message "Unexpected Device -  
> Connected device does not appear to be an Elecraft KAT500" when the  
> TX and RX data lines had both failed.  In my experience this fault  
> can only result if the utility is connected to a port that is  
> receiving data but it's not the data the utility was requesting.
>
> Andy, k3wyc
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to n8sbe at arrl.net